pthread_rwlock_rdlock
int pthread_rwlock_rdlock(pthread_rwlock_t *) __nonnull(1);
WR(stub_zero, pthread_rwlock_rdlock);
__strong_reference(_pthread_rwlock_rdlock, pthread_rwlock_rdlock);
#define _PROP_RWLOCK_RDLOCK(x) pthread_rwlock_rdlock(&(x))
pthread_rwlock_rdlock(&config->rwlock);